Neem

Neem oil (azadiracta indica), which is derived from the neem tree, is a powerful essential oil that has a number of benefits. Neem oil is sometimes used as an ingredient in health products, such as mouthwash and toothpaste. One of its purported benefits is its antibacterial action. Neem oil may also be helpful for stubborn fungal infections -- such as ringworm and athletes foot.